Preparatory Steps: • Clean around the injectors. • Disconnect the high pressure fuel supply lines. • Disconnect the fuel drain manifold. Rust Penetrating Solvent Caution: When rust has formed on the hold down nut, the injector can turn in the bore when the nut is loosened. This will cause severe damage to the head by… Read More »
10 mm Loosen the adjusting screw locknut and adjust the idle as required. Caution: Do not reduce idle spped from factory setting on the Stanadyne DB4 fuel injection pump. Internal dam age may result.
Idle speed adjustment on the Bosch P7100 can be made by loosening the idle screw locknut (1) and turning the idle screw (2) to achieve the desired idle speed. Turn the screw down (clockwise viewed from top) to decrease idle sped. Turn the screw up (counterclockwise viewed from top) to increase idle speed. After the… Read More »
Make sure the engine has Cylinder No. 1 at TDC. The fuel injection pump also has a timing pin (1), located in the governor housing, to position the pump shaft to correspond with TDC for Cylinder No. 1. The pin is to be reversed and stored in the housing (2) after the pump is installed.… Read More »
Bosch P7100 Preparatory Steps: • Clean debris. • Disconnect all fuel lines to the pump. • Remove control linkage. • Disconnect AFC tube. • Disconnect waste-gate turbo control line. Removal 9/16 Disconnect the external oil feed line at the inboard side of the fuel injection pump and the main oil rifle. Locate TDC for Cylinder… Read More »
Use the No. 1 intake valve to make sure the engine is at top dead center (TDC) on the compression stroke for cylinder No. 1. Refer to page 7-141. Fabricate a timing mark pointer for the front of the engine. This can be done by forming a piece of wire that can be tightened under… Read More »
Rotate the engine to TDC. Correct timing of the Lucas CAV DPA and Stanadyne DB4 fuel injection pump can be verified by removing the timing window cover plate. The Nippendenso EP-9 and Bosch P-7100 fuel injection pumps are checked by removing the timing pin access plug and verifying the slot in the pin will fit… Read More »
Rotate the crankshaft to TDC. 12 mm Remove the plug from the end of the pump. Bar the crankshaft in the direction opposite engine rotation until the indicator needle stops moving. Adjust the indicator face to read zero. Rotate the crankshaft back to TDC and count the number of revolutions of the indicator needle. The… Read More »
Correct timing of the Lucas CAV DPA/DPS fuel injection pump can be verified by removing the inspection plate. NOTE: Special equipment in an authorized shop is required to precisely time the Lucas CAV DPA fuel injection pump. However, for troubleshooting and in an emergency, visual alignment of the timing mark is close enough for the… Read More »
Pump-to-engine timing is extremely critical. Pump timing that is off by only a few crankshaft degrees will cause: 1. Poor performance – starting and power. 2. Excessive smoke and emissions. 3. Poor fuel economy. Engine pump timing begins with the timing of the fuel injection pump drive gear to the camshaft gear. The first step… Read More »